Feed-regulator for concrete-machines.



P. BUTLER. FEED REGULATOR FOB cononn'rn MACHINES.

APPLICATION FILED HAN-.27. 1912.

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FEED REGULATOR FOR OONORETE MACHINES.

APPLICATION FILED MAR. 27. 1912.

Patented Dec. 10, 1912.

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UNITED STATES PATENT OFFICE.

PALACE BUTLER, 0F INDIANAPOLIS, INDIANA, ASSIGNOR OF ONE-HALF T0 GUY R;

ELLIOTT, OF INDIANAPOLIS, INDIANA.

FEED-REGULATOR FOR CONCRETE-MACHINES.

To all whom it may concern:

Be it known that I, PALACE BUTLER, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and useful Improvements in Feed-Regulators forConcrete-Machines, of which the following is a specification.

,This invention relates to improvements in machines for mixing concrete.

The object is to provide a simple, inexpensive, and portable machine inwhich sand or gravel is deposited by the shovelful and the properquantity of cement automatically added ,to each sho-velful of sand orgravel, the ingredients thoroughly mixed in a dry state and then mixedwith water and discharged from the machine ready for I accomplish theabove object by the mechanismillustrated in the accompanying drawings,in whichi Figure 1 is a top plan view of my invention. Fig. 2, a sideelevation of same. Fig. 3, a vertical section on the-line 3-3 of Fig.

1. Fig. 4, a vertical section on the line 4-4 of Fig. 1, and. Fig. 5 aperspective View ofthe movable slide for regulating the cementdischarge.

Like characters of reference indicate like parts throughout the severalviews of the drawings.

The body of my machine is comprised of the sheet-metal cylinder or drum6 the lower end of which is mounted any suitable distance above theground or floor on legs 7 or if desired, upon wheels (not shown).

The top of the drum will preferably have a cover 8 upon which is ahopper 9 separated by a vcrticalpartition 10 into compartments 11 and12. The larger compartment 11 is supplied 'with cement which dischargesthrough a bottom opening into the drum 6. A portion of the dischargeopening is occupied by a feed roll 13 mounted on a shaft 14' suitablyjournaled to the walls of the hopper or to the drum-6, as shown. Securedto each end of roll 13 is a ratchet wheel 14 and mounted on the shaftnear each ratchet wheel and rotating with the shaft are disks 15carrying pawls 16 which engage the respective adjacent ratchet wheels14. These disks have flanges 17 proecting over the pawls to keep thelatter they acci- Specification of Letters Patent.

Patented Dec. 10,1912.

Application filed March 27, .1912. Serial No. 686,590.

dentally slip off of their ratchet wheels. The smaller compartment 12 ofthe hopper 1s where the sand or gravel is depositedby the shovelful. Ithas a'bottom discharge which is closed by. aplate 20 which is hinged tothe under side of the cover 8. The weighted bar 21 extending out fromthe plate holds the inner edge of the plate in contact with the roller13. The plate thus arrests the discharge of cement from the hopper 11.

hen the weight of cement and sand on the-plate overbalances the weighton bar 21 the plate swings down and dumps its load into the drum 6. Theplate is connected by links 23 with the disks 15 so as to rock the'latter by the swinging of the plate. The

rocking of the disks rotates the roller 13 whichpositivcly feeds a newcharge of cement down upon the plate 20. The roller may be corrugatedas. shown to make the feed more positive.

In order to regulate the size of the throat through which the cementdischarges from the compartment 11 to the plate 20 I provide a valve ordamper 25, which is a sheetmetal plate extending longitudinally of thefeed' roll, and outside of the hopper for convenient manipulation. Thisplate is concave in cross-section and works in contact with a curvedstationary plate 27 car- 'ried by the partition 10. Upwardly obliqueslots 28 in the plate 27 receive pins from the damper-plate 25, causingthe latter to approach toward or to recede from the feed roll when movedlongitudinally.

The weight on the bar 21 is adjustable longitudinally of the bar toenable the device tb be set so the plate 20 will dump with differentquantities'of cement and sand on it as occasion may require. It will benoted that the weight of the cement to be dumped each time is supportedby the plate 20 before the sand to complete the overbalance has beenadded.

When the quantity of cement and sand on the plate 20 overbalances theweight on the bar 21 the plate will swing down until arrested by thestop 27 and by'so doing will dump its load which will fall upon the apexof a cone-spreader 28 supported, by-

horizontal rods 29, in a funnel 30. Th e cone 28 so spreads the sand andcement that they are more thoroughly mixed when the ingredientsarecollected by the funnel 30.

The funnel 30 discharges upon a second a. properly wet it.

The lower'funnel will preferably be more contracted than the one aboveand its outlet is preferably' equipped with a sliding plate 39 whichserves as a valve for retaining the product of the machine when desired.

Having thus fully described my inven tion what I claim as new and wishto secure by Letters Patent, is

1. A proportionate feed for a mixing device consisting of two hoppers,one of which is provided with a movable discharger, a balanced receivingpan below the discharge opening of both of said hoppers, and'meansconnected with said movable discharger and I pan by which both aresimultaneously operated.

2. A proportionate feed for a mixing device consisting of'two hoppers,one of which is provided with a rotary discharger, a balanced receivingpan below the discharge 'opening of both. of said hoppers, and meansconnected with said rotary discharger and pan by which both aresimultaneously operated.

3. A proportionate feed for a mixing de-' balanced receiving pan belowthe discharge openings of said hoppers, and means connected with saidroller and pan by which 'both are simultaneously operated.

4. A proportionate feed for a mixing device consisting of two hoppers,one of which is provided with a discharge roller and an 1 adjustablevalve plate curved in cross-section to regulate its output or discharge,a balanced receiving pan below the discharge openings of said hoppers,and means connee-ted with said roller and pan by which both aresimultaneously operated.

5. A proportionate feed for a mixing device consisting of two hoppers,one of which is provided with a discharge roller having ratchet wheelsand an adjustable valve plate curved in cross-section to'regulate itsoutput or discharge, a balanced receiving pan below the dischargeopenings of said hoppers, pawls engaging the ratchet wheels of saidrollers, disks carrying said pawls and links connecting the disks andpan.

In witness whereof, I, have hereunto set my hand and seal atIndianapolis, Indiana, this 6th day of March, A. D. one thousand ninehundred and twelve.

PALACE BUTLER. v [1,. s.]

Witnesses: 1 JOSEPH A. MINTURN, i

GUY R. ELLIo'i'n.

